Patents Assigned to Ronald K. Pettigrew
  • Portable counter and data storage system
    Patent number: 5524129
    Abstract: A compact counting and data storage system includes control circuitry coupled with a detector and input selector to enable monitoring of traffic within a selected area for a selected count interval. The system also includes a readily removable data storage unit.
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: June 4, 1996
    Assignee: Ronald K. Pettigrew
    Inventors: Ronald K. Pettigrew, Bruce E. Anderson, Raymond A. Strickland